I see no reason the gardener should desire an area of boggy ground, but here there is a rather large area that borders the garden that is constantly damp. I presume the source of the moisture is a spring that is in close proximity or perhaps beneath the garden shed.
The spring dampens the forested area just beyond the boundary of the property, and a noticeable flow winds from here to the rear of the garden. The volume of water has varied over thirty one years that this garden has been tended, but in the recent decade the flow increased to kill a large holly and a prized witch hazel.
The damp area within the garden has been replanted with a moisture tolerant Sweetbay magnolia (Magnolia virginiana) and a variety of shrubs and perennials. A wide spreading, pendulous form of bald cypress (Taxodium distichum ‘Cascade Falls’) is quite happy in swampy ground, and soon will require regular trimming to prevent it from occupying too much space. I suppose that the whole of the planting is a year away from being satisfactory, but this is a considerable improvement from a few years ago when everything was chopped out and started nearly from scratch.
The damp woodland is home to a patch of native Ostrich ferns (Matteuccia struthiopteris), with a few pilfered years ago to start a clump in a much drier and sunnier setting where the fern must regularly be chopped back. Just beside the patch of Ostrich ferns are scattered clumps of the marvelous Skunk cabbage (Symplocarpus foetidus, below). I claim no role in starting these, but from late winter into spring the Skunk cabbages are a curiosity.